Method of beneficiating phosphate ores

摘要

The method of beneficiating a phosphate ore comprising apatite and including dolomitic impurities comprising reagentizing the ore having a particle size in the range of 75 mu m to about 420 mu m with an aqueous solution having a pH of from 3.5 to 4.5 and containing a fatty acid anionic collector and sodium chloride and subjecting the ore to froth flotation to float away the dolomitic impurities.